Wind Pressure Coefficients Zoning Method Based on an Unsupervised Learning Algorithm

Table 3

The most unfavorable pressure—the clustering validity indices in full wind direction.

k	CH	C	Gamma	DB	Hartigan	Tau	Scott	Marriot	Friedman	Rubin	KL	Silhouette	Dunn	SD
2	−42	0.250	0.659	0.755	172	1176	595	1.84	141	142	0.967	0.548	0.019	44
3	34	0.237	0.810	0.687	25	1343	675	2.12	277	278	0.198	0.532	0.022	36
4	36	0.216	0.859	0.633	10	1207	735	2.30	455	456	0.725	0.539	0.022	42
5	31	0.199	0.865	0.609	325	1133	761	2.89	565	566	0.488	0.528	0.019	45
6	159	0.284	0.927	0.578	122	1110	834	2.26	1041	1042	4.814	0.545	0.036	44
7	293	0.228	0.945	0.567	0	958	876	2.16	1483	1484	1.700	0.562	0.023	58
8	248	0.224	0.945	0.580	23	923	891	2.51	1673	1674	5.104	0.553	0.045	64
9	264	0.189	0.947	0.578	36	770	919	2.50	2119	2120	0.652	0.557	0.036	85
10	311	0.183	0.959	0.593	11	683	950	2.39	2740	2741	0.749	0.542	0.039	89